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// Copyright (C) 2016 The Qt Company Ltd.
// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR GPL-3.0-only
#include <QGuiApplication>
#include <QPropertyAnimation>
#include <Qt3DInput/QInputAspect>
#include <Qt3DRender/qcamera.h>
#include <Qt3DExtras/qcylindermesh.h>
#include <Qt3DExtras/QPhongMaterial>
#include <Qt3DExtras/QMorphPhongMaterial>
#include <Qt3DAnimation/QVertexBlendAnimation>
#include <Qt3DAnimation/QMorphTarget>
#include <Qt3DExtras/QCylinderGeometry>
#include <Qt3DCore/qentity.h>
#include <Qt3DCore/qtransform.h>
#include <Qt3DCore/qaspectengine.h>
#include <Qt3DExtras/qt3dwindow.h>
#include <Qt3DExtras/QForwardRenderer>
#include <Qt3DExtras/qfirstpersoncameracontroller.h>
int main(int argc, char **argv)
{
QGuiApplication app(argc, argv);
Qt3DExtras::Qt3DWindow view;
// Root entity
Qt3DCore::QEntity *rootEntity = new Qt3DCore::QEntity();
// Camera
Qt3DRender::QCamera *camera = view.camera();
camera->lens()->setPerspectiveProjection(45.0f, 16.0f/9.0f, 0.1f, 1000.0f);
camera->setPosition(QVector3D(0, 2, 20.0f));
camera->setUpVector(QVector3D(0, 1, 0));
camera->setViewCenter(QVector3D(0, 0, 0));
// For camera controls
Qt3DExtras::QFirstPersonCameraController *cameraController
= new Qt3DExtras::QFirstPersonCameraController(rootEntity);
cameraController->setCamera(camera);
view.defaultFrameGraph()->setCamera(camera);
view.defaultFrameGraph()->setClearColor(Qt::gray);
// Transform for mesh
Qt3DCore::QTransform *transform = new Qt3DCore::QTransform;
transform->setTranslation(QVector3D(0,-1,-1));
// Base mesh to morph
Qt3DExtras::QCylinderMesh *mesh = new Qt3DExtras::QCylinderMesh(rootEntity);
mesh->setRings(6);
mesh->setSlices(20);
// create morh targets from geometry
Qt3DExtras::QCylinderGeometry *cylinder1 = new Qt3DExtras::QCylinderGeometry(rootEntity);
Qt3DExtras::QCylinderGeometry *cylinder2 = new Qt3DExtras::QCylinderGeometry(rootEntity);
Qt3DExtras::QCylinderGeometry *cylinder3 = new Qt3DExtras::QCylinderGeometry(rootEntity);
cylinder1->setRings(6);
cylinder1->setSlices(20);
cylinder1->setLength(2.0f);
cylinder1->setRadius(1.0f);
cylinder2->setRings(6);
cylinder2->setSlices(20);
cylinder2->setLength(1.0f);
cylinder2->setRadius(5.0f);
cylinder3->setRings(6);
cylinder3->setSlices(20);
cylinder3->setLength(9.0f);
cylinder3->setRadius(1.0f);
QStringList attributes;
attributes.push_back(Qt3DCore::QAttribute::defaultPositionAttributeName());
attributes.push_back(Qt3DCore::QAttribute::defaultNormalAttributeName());
const QList<Qt3DAnimation::QMorphTarget*> morphTargets
= { Qt3DAnimation::QMorphTarget::fromGeometry(cylinder1, attributes),
Qt3DAnimation::QMorphTarget::fromGeometry(cylinder2, attributes),
Qt3DAnimation::QMorphTarget::fromGeometry(cylinder3, attributes),
Qt3DAnimation::QMorphTarget::fromGeometry(cylinder1, attributes) };
Qt3DAnimation::QVertexBlendAnimation *animation = new Qt3DAnimation::QVertexBlendAnimation;
const QList<float> times = { 0.0f, 5.0f, 8.0f, 12.0f };
animation->setTargetPositions(times);
animation->setTarget(mesh);
animation->setMorphTargets(morphTargets);
// Material
Qt3DExtras::QMorphPhongMaterial *material = new Qt3DExtras::QMorphPhongMaterial(rootEntity);
material->setDiffuse(Qt::red);
QObject::connect(animation, &Qt3DAnimation::QVertexBlendAnimation::interpolatorChanged,
material, &Qt3DExtras::QMorphPhongMaterial::setInterpolator);
// Cylinder
Qt3DCore::QEntity *morphingEntity = new Qt3DCore::QEntity(rootEntity);
morphingEntity->addComponent(mesh);
morphingEntity->addComponent(transform);
morphingEntity->addComponent(material);
// Cylinder shape data
Qt3DExtras::QCylinderMesh *cylinderMesh = new Qt3DExtras::QCylinderMesh();
cylinderMesh->setRadius(1);
cylinderMesh->setLength(3);
cylinderMesh->setRings(100);
cylinderMesh->setSlices(20);
// Transform for cylinder
Qt3DCore::QTransform *cylinderTransform = new Qt3DCore::QTransform;
cylinderTransform->setScale(0.5f);
cylinderTransform->setRotation(QQuaternion::fromAxisAndAngle(QVector3D(1, 0, 0), 45.0f));
// Material
Qt3DExtras::QPhongMaterial *cylinderMaterial = new Qt3DExtras::QPhongMaterial(rootEntity);
cylinderMaterial->setDiffuse(Qt::red);
// Cylinder
Qt3DCore::QEntity *cylinder = new Qt3DCore::QEntity(rootEntity);
cylinder->addComponent(cylinderMesh);
cylinder->addComponent(cylinderTransform);
cylinder->addComponent(cylinderMaterial);
QPropertyAnimation* anim = new QPropertyAnimation(animation);
anim->setDuration(5000);
anim->setEndValue(QVariant::fromValue(12.0f));
anim->setStartValue(QVariant::fromValue(0.0f));
anim->setLoopCount(-1);
anim->setTargetObject(animation);
anim->setPropertyName("position");
anim->start();
// Set root object of the scene
view.setRootEntity(rootEntity);
view.show();
return app.exec();
}
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